object-initializer

This question already has an answer here: What's the difference between an object initializer and a constructor? 7 answers I have just learned about object initializers and was wondering what the best practices for when to use them are. This is what I read about them: http://msdn.microsoft.com/en-us/library/vstudio/bb384062.aspx It makes it clear that they are necessary for creating anonymous types but I would like to know if I should try to prefer them to normal constructors in all the other cases. I would like to know if I should try to prefer them to normal constructors in all the other

I've noticed that the new ExpandoObject implements IDictionary<string,object> which has the requisite IEnumerable<KeyValuePair<string, object>> and Add(string, object) methods and so it should be possible to use the collection initialiser syntax to add properties to the expando object in the same way as you add items to a dictionary. Dictionary<string,object> dict = new Dictionary<string,object>() { { "Hello", "World" } }; dynamic obj = new ExpandoObject() { { "foo", "hello" }, { "bar", 42 }, { "baz", new object() } }; int value = obj.bar; But there doesn't seem to be a way of doing that.